Begin by creaming together 1 cup of room temperature unsalted butter and ¾ cup each of granulated and brown sugar in a large mixing bowl for 2-3 minutes until light and fluffy.

Add in 1 teaspoon of vanilla extract and a pinch of salt, mixing just until combined.

Gradually incorporate 2 cups of all-purpose flour until a smooth dough forms.

Carefully divide the prepared dough in half. Mix in desired add-ins for each half.

Roll each portion of dough into a log about 2 inches in diameter and wrap tightly in plastic wrap. Chill for at least 2 hours.

Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

Slice the chilled dough into rounds about ¼ inch thick and arrange on the baking sheet.

Bake for 10-12 minutes until edges are set and slightly golden. Allow to cool for 5 minutes before transferring to a wire rack.